config.neon – Unexpected ‘-’ on line

Hello, please can you give me some tip what can be wrong,
getting error: "Unexpected ‘-’ on line 29, column 4|.

There are these lines in config.neon:

services:
   - App\Model\SessionData // is line 29
   - App\Components\OneTaskComponentFactory

After short experimenting I change tabs for (3) spaces but
no effect. The strange is that the project is running
on my laptop (interpreted by ‘php -S localhost:8000 -t’) but
not at the remote apache server. I realy don`t know what should
be wrong. Thanks for help.